Woundable ratchet wrench

Abstract

The present invention discloses a woundable and unidirectional torque wrench which comprises a driving head, a first gearwheel, a second gearwheel, a woundable member, a resilient tube and a gripping member. The driving head includes a body, a rotating member, a pawl and a control structure. The first gearwheel is fixed to the rotating member. The second gearwheel is rotatably provided inside a pivot hole of the body and engages with the first gearwheel by teeth. One end of the woundable member can be driven by external force, and the other end is connected to the second gearwheel. The resilient tube accommodating the woundable member is connected to the body. The gripping member includes a bar member having two joint members provided at its two ends, and a third joint member couples with a connecting grip of the body.

1. A woundable ratchet wrench which comprises:
 a driving head including a body, a rotating member, a pawl and a control structure, said body member having a first accommodation chamber with a vertical facing opening, said first accommodation chamber communicating with a second accommodation chamber, the central axial line of said rotating member being vertical extension, said rotating member rotatably mounted in the first accommodation chamber, a connecting grip horizontally stretching out from one side of said body member, a small pivot hole penetrating through said connecting grip, one end of said small pivot hole communicating with said first accommodation chamber, said rotating member having a coupling member to connect one workpiece, the outer surface of the top of the rotating member surrounded with a plurality of meshing tooth, said pawl movably and rotatably mounted in said second accommodation chamber, said pawl's front end facing said rotating member having one retaining tooth for engaging said meshing tooth, the relatively contacted position of said pawl to said rotating member being moved by means of said control structure so as to control said rotating member to make unidirectional clockwise or counterclockwise rotation; 
 a first gearwheel whose outer surface surrounded with a plurality of first tooth, said first gearwheel and said rotating member being able to make a coaxial and synchronal rotation, said first gearwheel being inside said first accommodation chamber; 
 a second gearwheel rotatably mounted in said small pivot hole of said body, said second gearwheel which faces one front end of said first gearwheel being surrounded with a plurality of second tooth member to engage the plurality of first tooth, a female coupling member being provided at the rear end of said second gearwheel; 
 a woundable member with a front end connected to said second gearwheel, a rear end of said woundable member being able to be driven by an external force; 
 a resilient tube whose interior being for accommodating said woundable member, a front end of said resilient tube being fixedly connected to said body, said rear end of said woundable member exposing outside a rear end of said resilient tube, said resilient tube being able to restore to a straight tube shape when said resilient tube is not bent by external force; and 
 a gripping member, said gripping member includes a rigid straight bar member which accommodates said resilient tube, a front end of said straight bar member has a third joint member which couples with said connecting grip of said body, a rear end of said straight bar member has a fourth joint member which couples with a rear coupling member at the rear end of said woundable member, said fourth joint member is in a separating status from said rear coupling member when said third joint member of said straight bar member couples with said connecting grip, and said fourth joint member couples with said rear coupling member when said third joint member is separated from said connecting grip. 
 
   
   
     2. The wrench as claimed in  claim 1 , wherein said rear coupling member of said woundable member is a raised hexagonal column, and said fourth joint member of said straight bar member is a hexagonal chamber to fit said hexagonal column. 
   
   
     3. The wrench as claimed in  claim 1 , wherein said rear coupling member of said woundable member is provided on a rear connector fixed on the rear end of the woundable member, the outer surface of said rear connector has one first sunk hole and one second sunk hole, the inner surface of the fourth joint member of said straight bar member has an annual positioning groove, said first sunk hole and second sunk hole accommodate one first ball member and one second resilient member respectively, and one of said ball members lodges in said positioning groove of said straight bar member. 
   
   
     4. The wrench as claimed in  claim 1 , wherein said gripping member further comprises one gripping unit which couples with said straight bar member for user's gripping. 
   
   
     5. A woundable ratchet wrench which comprises:
 a driving head including a body, a rotating member, a pawl and a control structure, said body member having a first accommodation chamber with a vertical facing opening, said first accommodation chamber communicating with a second accommodation chamber, the central axial line of said rotating member being vertical extension, said rotating member rotatably mounted in the first accommodation chamber, a connecting grip horizontally stretching out from one side of said body member, a small pivot hole penetrating through said connecting grip, one end of said small pivot hole communicating with said first accommodation chamber, said rotating member having a coupling member to connect one workpiece, the outer surface of the top of the rotating member surrounded with a plurality of meshing tooth, said pawl movably and rotatably mounted in said second accommodation chamber, said pawl's front end facing said rotating member having one retaining tooth for engaging said meshing tooth, the relatively contacted position of said pawl to said rotating member being moved by means of said control structure so as to control said rotating member to make unidirectional clockwise or counterclockwise rotation; 
 a first gearwheel whose outer surface surrounded with a plurality of first tooth, said first gearwheel and said rotating member being able to make a coaxial and synchronal rotation, said first gearwheel being inside said first accommodation chamber; 
 a second gearwheel rotatably mounted in said small pivot hole of said body, said second gearwheel which faces one front end of said first gearwheel being surrounded with a plurality of second tooth member to engage the plurality of first tooth, a female coupling member being provided at the rear end of said second gearwheel; 
 a woundable member with a front end connected to said second gearwheel, a rear end of said woundable member being able to be driven by an external force; and 
 a resilient tube whose interior being for accommodating said woundable member, a front end of said resilient tube being fixedly connected to said body, said rear end of said woundable member exposing outside a rear end of said resilient tube, said resilient tube being able to restore to a straight tube shape when said resilient tube is not bent by external force; 
 wherein said woundable member comprises a woundable bar member, a front connector and a rear connector, said woundable bar member is a long extending bar, said woundable bar member can be bended and wound at will by external force, a front coupling member is provided at the front end of said front connector, said front coupling member couples with a coupling portion of said second gearwheel, a rear coupling member is at the rear end of said front connector, said rear coupling member couples with the front end of said woundable bar, a rear coupling member which can be driven by external force is at the rear end of said rear connector, a front coupling member is at the front end of said rear connector, and said front coupling member of the rear connector is fixed to the rear end of said woundable bar. 
 
   
   
     6. The wrench as claimed in  claim 5 , wherein said coupling portion of said second gearwheel is a hex chamber, and said front coupling member of said front connector is a hex column to fit said hex chamber. 
   
   
     7. The wrench as claimed in  claim 5 , wherein said coupling member of said rear connector is a raised hex column. 
   
   
     8. The wrench as claimed in  claim 5 , wherein said woundable bar of said woundable member, said front connector and said rear connector are of one-piece-unit, the middle section of said woundable member is a soft body to form a woundable bar, and its front end forms said front connector while its rear end forms said rear connector. 
   
   
     9. The wrench as claimed in  claim 5 , wherein said coupling portion of said second gearwheel is a coupling hole, a first resilient member is accommodated in said coupling hole, the two ends of said first resilient member shoring up said second gearwheel and said woundable member. 
   
   
     10. A woundable ratchet wrench which comprises:
 a driving head including a body, a rotating member, a pawl and a control structure, said body member having a first accommodation chamber with a vertical facing opening, said first accommodation chamber communicating with a second accommodation chamber, the central axial line of said rotating member being vertical extension, said rotating member rotatably mounted in the first accommodation chamber, a connecting grip horizontally stretching out from one side of said body member, a small pivot hole penetrating through said connecting grip, one end of said small pivot hole communicating with said first accommodation chamber, said rotating member having a coupling member to connect one workpiece, the outer surface of the top of the rotating member surrounded with a plurality of meshing tooth, said pawl movably and rotatably mounted in said second accommodation chamber, said pawl's front end facing said rotating member having one retaining tooth for engaging said meshing tooth, the relatively contacted position of said pawl to said rotating member being moved by means of said control structure so as to control said rotating member to make unidirectional clockwise or counterclockwise rotation; 
 a first gearwheel whose outer surface surrounded with a plurality of first tooth, said first gearwheel and said rotating member being able to make a coaxial and synchronal rotation, said first gearwheel being inside said first accommodation chamber; 
 a second gearwheel rotatably mounted in said small pivot hole of said body, said second gearwheel which faces one front end of said first gearwheel being surrounded with a plurality of second tooth member to engage the plurality of first tooth, a female coupling member being provided at the rear end of said second gearwheel; 
 a woundable member with a front end connected to said second gearwheel, a rear end of said woundable member being able to be driven by an external force; 
 a resilient tube whose interior being for accommodating said woundable member, a front end of said resilient tube being fixedly connected to said body, said rear end of said woundable member exposing outside a rear end of said resilient tube, said resilient tube being able to restore to a straight tube shape when said resilient tube is not bent by external force; and 
 a gripping member, said gripping member includes a rigid straight bar member which accommodates said resilient tube, a front end of said straight bar member has a third joint member which couples with said connecting grip of said body, a rear end of said straight bar member has a fourth joint member which couples with a rear coupling member at the rear end of said woundable member, said fourth joint member is in a separating status from said rear coupling member when said third joint member of said straight bar member couples with said connecting grip, and said fourth joint member couples with said rear coupling unit when said third joint member is separated from said connecting grip; 
 wherein said rear coupling member of said woundable member is a raised hexagonal column, and said fourth joint member of said straight bar member is a hexagonal chamber to fit said hexagonal column; said rear coupling member of said woundable member is provided on a rear connector fixed on the rear end of the woundable member, the outer surface of said rear connector has one first sunk hole and one second sunk hole, the inner surface of the fourth joint member of said straight bar member has an annual positioning groove, said first sunk hole and second sunk hole respectively accommodate a first ball member and a second resilient member respectively, and one of said ball members lodges in said positioning groove of said straight bar member; said gripping member further comprises a gripping unit which couples with said straight bar member for user's gripping; 
 wherein said woundable member comprises a woundable bar member, a front connector and a rear connector, said woundable bar member is a long extending bar, said woundable bar member can be bended and wound at will by external force, a front coupling member is provided at the front end of said front connector, said front coupling member couples with a coupling portion of said second gearwheel, a rear coupling member is at the rear end of said front connector, said rear coupling member couples with the front end of said woundable bar, a rear coupling member which can be driven by external force is at the rear end of said rear connector, a front coupling member is at the front end of said rear connector, and said front coupling member of the rear connector is fixed to the rear end of said woundable bar; said coupling portion of said second gearwheel is a hex chamber, and said front coupling member of said front connector is a hex column to fit said hex chamber; said coupling member of said rear connector is a raised hex column; said woundable bar of said woundable member, said front connector and said rear connector are of one-piece-unit, the middle section of said woundable member is a soft body to form a woundable bar, and its front end forms said front connector while its rear end forms said rear connector; said coupling portion of said second gearwheel is a coupling hole, a first resilient member is accommodated in said coupling hole, the two ends of said first resilient member shoring up said second gearwheel and said woundable member.